BUTTERFLY FREE CHACK glue is completely free from organic solvents and is made from 100% liquidized natural caoutchouc. After a drying period of around 15 – 20 minutes it allows you to stick the rubber down onto the blade. This glue comes in a 37ml bottle with 8 sponges for spreading the glue. It is also very easy to remove the rubber from the blade and to peel off the remaining caoutchouc from the sponge. Note: Please shake bottle before use.